Update 2019-05-07-progress-report-april.md

_posts/2019-05-07-progress-report-april.md

@@ -24,7 +24,7 @@ https://code.greenhost.net/openappstack/nextcloud/
 ## Small improvements
 
 Apart from that, we have worked on improving the basis of OpenAppStack. During
-Infracon we identified that we would rather use Nginx than Traefik, so we
+Infracon we identified that we would rather use Nginx and cert-manager than Traefik, so we
 implemented that change. Apart from that we switched from Ubuntu to Debian as
 the underlying operating system. Lastly we have worked a lot on stabilising our
 Continuous Integration pipeline, which should make our work easier in the